Transmission Control System

P1780 - Park/Neutral Position Switch Malfunction

CIRCUIT DESCRIPTION

DTC Detection Condition:

The park/neutral position switch detects the shift lever position and sends signals to the ECM. The ECM receives signals (PNP, REVERSE, 2ND and LOW) from the park/neutral position switch. When the signal is not sent to the ECM from the park/neutral position switch, the ECM judges that the shift lever is in the D position.

Wiring Diagram:

Step 1:

Steps 2 - 3:

INSPECTION PROCEDURE